foo
     2	foo
     3	ffoo
     4	f_oo	frink
     5	_foo	foo
     6	_ffoo	bar
     7	f_foo	baz
     8	foobar	quux
     9	ffoooo__bbaarr	ichi
    10	_fo_o___bbaarr	ni
    11	http://ffoo.com/
    12	http://foo.com//
    13	http://foo.com/
    14	http://bar.com/http://www.baz.com/
    15	hhttp://foo.com/
    16	_http://foo.com/
    17	h_ttp://foo.com/
    18	xx	x	x					xxx
f
__
_
xyx
foo
